HP OpenVMS Systems

DECnet NCL to switch Ethernet controllers?

Using AlphaServer 2100A, there is a built-in 10mbps ethernet network
card(ewa-0). Now I plug in a 100mbps ethernet network card(ewa-1), how can
I reconfigure the Decnet Phase V network to use the 100mbps LAN card instead
of the old one ? Can I simulaten
ous use 2 network cards within the same network ?
Thanks

The Answer is :

Disable the 10 megabit per second (Mbps) Ethernet controller in NCL,
or upgrade to a DECnet-Plus host-based routing configuration (and
then use both controllers).
To make changes in this area on an OpenVMS DECnet-Plus system,
you must use the NCL utility. To invoke NCL:
$ RUN SYS$SYSTEM:NCL
The easiest approach to disabling the target controller is to
effectively disable what is enabled in the file:
SYS$MANAGER:NET$CSMACD_STARTUP.NCL
In other words, use the NCL command:
DISABLE NODE 0 CSMA-CD STATION CSMACD-1
if the above file contains the line for EWA-0:
ENABLE NODE 0 CSMA-CD STATION CSMACD-1
To make the change permanent, edit the above file, and comment out
the CREATE and ENABLE lines.
Note that each Ethernet protocol type configured and running on the
system will typically get a unique unit number on the target controller.
You will typically want to shut down all activity on the controller
before reconfiguring or disabling it.
An example of the file follows:
$ TYPE SYS$SYSROOT:[SYSMGR]NET$CSMACD_STARTUP.NCL;1
!% NET$CONFIGURE.COM Created
!% NCL Script SYS$SPECIFIC:[SYSMGR]NET$CSMACD_STARTUP.NCL;
!% 10-DEC-1999 11:27:16.80
!%
CREATE NODE 0 CSMA-CD
CREATE NODE 0 CSMA-CD STATION CSMACD-1 COMMUNICATION PORT = EWA
ENABLE NODE 0 CSMA-CD STATION CSMACD-1
CREATE NODE 0 CSMA-CD STATION CSMACD-2 COMMUNICATION PORT = EWB
ENABLE NODE 0 CSMA-CD STATION CSMACD-2